In the java/web3j/http/src/main/java/kaleido subdirectory open App.java:

Replace the RPC_ENDPOINT placeholder with the RPC endpoint for your node.

Replace the USER placeholder with the basic auth credentials username.

Replace the PASS placeholder with the basic auth credentials password.

Navigate to the java/webj/http subdirectory and run mvn package to install the dependencies and build the Java archive file. This will output a JAR file – kaleido-webj-example-0.0.1-SNAPSHOT-jar-with-dependencies.jar – into a newly created /target directory.

Remain in java/webj/http and run java -jar target/kaleido-webj-example-0.0.1-SNAPSHOT-jar-with-dependencies.jarto kick off the program.